Home / 145,491.09-218,353.27-75,390.45

Finding the Fourth Proportional to 145,491.09, 218,353.27 and 75,390.45

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Solution

The fourth proportional to 145,491.09, 218,353.27 and 75,390.45 is: 113,146.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,491.09 : 218,353.27 = 75,390.45 : x
  2. Step 2: Convert to fraction form
    145,491.09/218,353.27 = 75,390.45/x
  3. Step 3: Cross multiply
    145,491.09x = 218,353.27 × 75,390.45
  4. Step 4: Simplify right side
    145,491.09x = 16,461,751,284.27
  5. Step 5: Solve for x
    x = 16,461,751,284.27/145,491.09
  6. Step 6: Final answer
    x = 113,146.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.